[Dovecot] dsync mirror to convert from mbox (1.2x) to mdbox (2.2)

[Timo Sirainen]

On 22.3.2013, at 0.31, Ken A <ka at pacific.net> wrote:

> I'm converting mail from mbox to mdbox.
> I've copied mail over to a new system, and now I'm running dsync like this:
> 
> dsync -u username mirror
> mbox:/folder_location/username:INBOX=/inbox_location/username
> 
> That seemed to work, with a couple minor errors:
> 
>> dsync(username): Warning: Our dotlock file /mail_location/username.lock was deleted (locked 20 secs ago, touched 20 secs ago)
>> dsync(username): Error: file_dotlock_delete() failed with mbox file /mail_location/username: No such file or directory
> 
> Do I also need to specify where dovecot's indexes are for the old mbox
> files, or is this not needed for mbox conversions (when they are the
> source)?


Indexes aren't required, but looks like it takes a while to run dsync and you have another process that decides 20 seconds is long enough for a timeout and deletes the lock. Indexes would make it somewhat faster. Do you have mbox_dotlock_change_timeout=20? That's too low.